EP0177879A3 - Circuit responsive to fault current - Google Patents
Circuit responsive to fault current Download PDFInfo
- Publication number
- EP0177879A3 EP0177879A3 EP85112402A EP85112402A EP0177879A3 EP 0177879 A3 EP0177879 A3 EP 0177879A3 EP 85112402 A EP85112402 A EP 85112402A EP 85112402 A EP85112402 A EP 85112402A EP 0177879 A3 EP0177879 A3 EP 0177879A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- rectifier circuit
- auxiliary
- trigger
- secondary winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
Dargestellt und beschrieben ist eine Fehlerstromschutz schaltung (1) mit einem Summenstromwandler (4), der zwei Primärwicklungen (5, 6) und eine Sekundärwicklung (7) auf weist, und mit einer Auslöseschaltung (8), die einen Auslöse transistor (9) und zwei Steuereingänge (10, 11) aufweist und der Sekundärwicklung (7) des Summenstromwandlers (4) nachgeschaltet ist. Residual current protection is shown and described circuit (1) with a summation current transformer (4), the two Primary windings (5, 6) and a secondary winding (7) has, and with a trigger circuit (8) which has a trigger transistor (9) and two control inputs (10, 11) and the secondary winding (7) of the total current transformer (4) is connected downstream.
Bei der erfindungsgemäßen Fehlerstromschutzschaltung (1) ist die Ansprechempfindlichkeit dadurch erhöht, daß an die Sekundärwicklung (7) des Summenstromwandlers (4) eine Gleichrichterschaltung (12) angeschlossen ist, daß die Gleich richterschaltung (12) ein Halbleiterventil (13) und einen Spei cher bzw. Glättungskondensator (14) enthält, daß der Pluspol (15) der Gleichrichterschaltung (12) an den ersten Steuerein gang (10) der Auslöseschaltung (8) angeschlossen ist und daß zwischen dem Minuspol (16) der Gleichrichterschaltung (12) und dem zweiten Steuereingang (11) der Auslöseschaltung (8) eine von einem Hilfsstrom durchflossene Hilfsimpedanz (17) vorgesehen ist. Vorzugsweise ist die Gleichrichterschaltung (12) als Villardschaltung ausgeführt und als Hilfsimpedanz (17) eine Hilfsdiode vorgesehen. In the residual current protection circuit according to the invention (1) the sensitivity is increased in that the Secondary winding (7) of the total current transformer (4) one Rectifier circuit (12) is connected that the equal rectifier circuit (12) a semiconductor valve (13) and a Spei cher or smoothing capacitor (14) contains that the positive pole (15) of the rectifier circuit (12) to the first control unit gang (10) of the trigger circuit (8) is connected and that between the negative pole (16) of the rectifier circuit (12) and the second control input (11) of the trigger circuit (8) an auxiliary impedance through which an auxiliary current flows (17) is provided. The rectifier circuit is preferably (12) designed as a Villard circuit and as an auxiliary impedance (17) an auxiliary diode is provided.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3436746 | 1984-10-06 | ||
DE3436746 | 1984-10-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0177879A2 EP0177879A2 (en) | 1986-04-16 |
EP0177879A3 true EP0177879A3 (en) | 1987-08-19 |
Family
ID=6247296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85112402A Withdrawn EP0177879A3 (en) | 1984-10-06 | 1985-10-01 | Circuit responsive to fault current |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0177879A3 (en) |
AU (1) | AU4840785A (en) |
ES (1) | ES8608742A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59005801D1 (en) * | 1989-09-07 | 1994-06-30 | Siemens Ag | Residual current circuit breaker. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1523445A (en) * | 1967-03-23 | 1968-05-03 | Comp Generale Electricite | Circuit breaker incorporating a semiconductor threshold element |
DE2036134A1 (en) * | 1969-08-22 | 1971-02-25 | Hubbell Inc Harvey | Earth fault relay circuit |
DE2547550B2 (en) * | 1974-10-31 | 1980-09-18 | Sgs-Ates Componenti Elettronici S.P.A., Agrate Brianza, Mailand (Italien) | Voltage converter circuit |
EP0113026A1 (en) * | 1982-12-02 | 1984-07-11 | Siemens Aktiengesellschaft | Earth leakage circuit breaker |
-
1985
- 1985-10-01 EP EP85112402A patent/EP0177879A3/en not_active Withdrawn
- 1985-10-04 ES ES547611A patent/ES8608742A1/en not_active Expired
- 1985-10-04 AU AU48407/85A patent/AU4840785A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1523445A (en) * | 1967-03-23 | 1968-05-03 | Comp Generale Electricite | Circuit breaker incorporating a semiconductor threshold element |
DE2036134A1 (en) * | 1969-08-22 | 1971-02-25 | Hubbell Inc Harvey | Earth fault relay circuit |
DE2547550B2 (en) * | 1974-10-31 | 1980-09-18 | Sgs-Ates Componenti Elettronici S.P.A., Agrate Brianza, Mailand (Italien) | Voltage converter circuit |
EP0113026A1 (en) * | 1982-12-02 | 1984-07-11 | Siemens Aktiengesellschaft | Earth leakage circuit breaker |
Also Published As
Publication number | Publication date |
---|---|
ES547611A0 (en) | 1986-07-16 |
EP0177879A2 (en) | 1986-04-16 |
ES8608742A1 (en) | 1986-07-16 |
AU4840785A (en) | 1986-04-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69412938T2 (en) | Earth fault switch | |
DE1463251B2 (en) | Protective circuit for overcurrent shutdown using a protective switch for a converter with a phase control circuit that responds to overcurrent | |
DE2717378A1 (en) | DC / DC CONVERTER | |
DE69120851T2 (en) | Differential relay for transformer | |
DE3028986A1 (en) | MOS FET switch - has triple wound input transformer with blocking oscillator | |
EP0177879A3 (en) | Circuit responsive to fault current | |
DE691876C (en) | Circuit for the simultaneous limitation of large and the suppression of small amplitudes | |
DE3885703T2 (en) | ADDITIONAL MODULE FOR DETECTING THE GROUND. | |
CH625917A5 (en) | ||
DE2938068C2 (en) | ||
DE759977C (en) | Device to prevent false tripping of fast-working protective devices | |
DE2110723C3 (en) | Delay element for a logical alternating voltage system | |
DE1091659B (en) | Circuit for recording the maximum influencing variable | |
DE2938124C2 (en) | ||
DE2643985C3 (en) | Overload protection circuit for a transistor blocking converter with several output voltages | |
DE603389C (en) | Circuit arrangement for signal receivers in telephone systems | |
DE2043007A1 (en) | Residual current circuit breaker | |
DE19516616C1 (en) | Arrangement with a line outlet connected to an electrical power supply network via a circuit breaker with at least one consumer and with an undervoltage protection arrangement | |
DE2526677C3 (en) | Capacitor arrangement for influencing the reactive current in electrical AC voltage networks | |
DE679007C (en) | Device for influencing the dynamic characteristics of direct current generators | |
AT522724A1 (en) | Isolated flyback converter with a quadratic transformation ratio | |
DE19516618C1 (en) | Arrangement with a line outlet connected to an electrical power supply network via a circuit breaker with at least one consumer and with a voltage and overcurrent protection arrangement | |
DE3534764C2 (en) | ||
DE1588222A1 (en) | Overload protection circuit | |
DE3205429A1 (en) | Fault current trip device for DC, pulse and AC fault currents |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17P | Request for examination filed |
Effective date: 19861014 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19900131 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19900410 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HAFEMANN, KLAUS Inventor name: KULLIK, GUENTER |